Add lb_tcpsocket test

crates/lb/tests/net.lua

@@ -26,13 +26,50 @@ describe("tcp", function()
   describe("socket", function()
     test("bind", function()
       local socket = net.bind_tcp("127.0.0.1")
-
       -- binds to the correct port
       assert(tostring(socket:local_addr():ip()) == "127.0.0.1")
       assert(socket:local_addr():port() ~= 0)
-
       -- should not be able to rebind socket
       assert(not pcall(socket.bind, socket, net.socketaddr("127.0.0.1")))
     end)
+
+    test("options", function()
+      local socket = net.tcp()
+      -- keepalive
+      socket:set_keepalive(true)
+      assert(socket:keepalive() == true)
+      socket:set_keepalive(false)
+      assert(socket:keepalive() == false)
+      -- reuseaddr
+      socket:set_reuseaddr(true)
+      assert(socket:reuseaddr() == true)
+      socket:set_reuseaddr(false)
+      assert(socket:reuseaddr() == false)
+      -- reuseport not always supported on all platforms
+      -- sendbuf
+      socket:set_sendbuf(4096)
+      assert(socket:sendbuf() >= 4096)
+      -- recvbuf
+      socket:set_recvbuf(4096)
+      assert(socket:recvbuf() >= 4096)
+      -- linger
+      socket:set_linger(0)
+      assert(socket:linger() == 0)
+      socket:set_linger(2)
+      assert(math.abs(socket:linger() - 2) < 0.1)
+      -- nodelay
+      socket:set_nodelay(true)
+      assert(socket:nodelay() == true)
+      socket:set_nodelay(false)
+      assert(socket:nodelay() == false)
+    end)
+
+    test("can't use socket after conversion", function()
+      local socket = net.tcp()
+      socket:bind(net.socketaddr("127.0.0.1"))
+      socket:listen(10) -- convert to listener
+      assert(not pcall(socket.listen, socket, 10)) -- socket consumed
+      assert(not pcall(socket.local_addr, socket))
+    end)
   end)
 end)